Loom stopping mechanism



Dec. 27, 1932. v. LINDSJO LOOM STOPPING MECHANISM 5 Shets-$heet Filed Sept. 28, 1931 IN VEN TOR firm Dec, 27, 1932. v. LINDSJO 1,892,062

LOOM STOPIING MECHANISM Filed Sept. 28, 1931 3 Sheets-Sheet 2 INYENTOR A'fTORNEY.

Dec. 27, 1932. V; LINDSJO 1,892,062

LOOM STOPPING MECHANISM Filed Sept. 28, 1931 I) Sheets-Sheet 5 g 'ENTOR' A TTORNE Y Patented Dec. 27, 1932 UNITED STATES R 115N O FIGE TION, or nornnam MASSACHUSETTS, A ooaroaarron or MAINE LQOM s'rorrme MECHANISM Application filed September 2 8 1931. Serial No. $5,457.

This invention relates to loom stopping mechanism and is more particularly directed to stopping mechanism for shuttle changing looms.

In looms of the shuttle changing type it is now the ordinary practice to effect replenishment of filling by substituting for the prev1- ously use-d shuttle a fresh shuttle supplied with filling. In effecting the shuttle change the box plates of the change shuttle box are usually displaced from their normal weaving position to permit the depleted shuttle to be removed from the shuttle box and a shuttle having a fresh supply of filling to be placed therein. Various means have been devised for removing the box plates from their normal weaving position to permit the change of shuttles, but it will happen at times especial- 1y where the change of shuttle is made during the continued operation of the loom, that one or both of the box plates may fail to return to normal weaving position after shuttle change, with the result that if the shuttle is picked from the change box under such condi- Y tions it is liable to break the warp threads, or

get caught in the shed, or be thrown out of the loom entirely and probably to the injury of the loom attendant.

A feature of the present invention, therefore, consists of means rendered effective to stop the loom should one or both of the box plates fail to return to normal weaving position after the shuttle change.

The invention and novel features thereof will best be made clear from the following description and accompanying drawings of one good practical form thereof.

In the drawings Fig. l is a front and rear sectional elevation showing the loom parts in normal weaving position;

Fig. 2 is a similar sectional elevation showing the position of loom parts when a box plate fails to return to normal Weaving position after a change of shuttles; and i Fig. 3 is a perspective view at therear of the lay, some of the parts beingshownin section and others broken awayfor clearness of illustration.

The loom frame 1 may be ofany usual box plate 11, as the full shuttle is character suitable for the support of the op-- erating parts. The lay 2 is carried by the usual lay swords 3 and is given its movement towards and from the front of the loom by the pitman 4, as usual. The lay 2 carries a reed 5 which may be of any usual type, and as shown in the present instance of the invention, the reed is held between the hand rail 6 and the lay beam, as usual.

The change shuttle box at one end of the lay comprises a. back plate 7 carried by arms 8 pi'votally mounted at 9 to the brackets 10 secured to the front part of the lay. The front box plate 11 is carried by arms 12 pivotally mounted at 13 at the back of the lay, and the back box plate 7 is normally under the influence of a spring 14 acting normally to move the back box plate to weaving position after a change of shuttles. The front box plate 11 has an inclined portion 15 and is normally held in its lower or weaving position by an abutment 16 carried by one or more of the arms 8 of the back box plate support, the efiect being that when the back box plate is raised by an appropriate mechanism the front box plate will be free to be lifted by the entering or replenishing shuttle, or as more fully explained in applicants co-pending application Ser. No. 523,455, filed 7 March 18, 1931.

Secured to the arms of the back box plate is a downwardly extending tail piece 17 which, on call for replenishment of filling, may be moved by an arm 18, extending from a. shaft'lS) supported on the 100m frame and to which is connected the downwardly extending arm 20, having a rearwardly extending operating member 21 which, on call for replenishment of filling bunter 22 on one of the lay swords, with the result that upon a shuttle change the back box plate will be lifted to permit the exit of the depleted shuttle, and the incoming or replenishing shuttle will itself lift the front moved rearwardly into the shuttle box. It is deemed unnecessary herein to enlarge upon the details of the mechanism for displacing the box plates for the change of shuttles, as the maybe engaged by a details of such mechanism form no essential part of the present invention and are more fully and clearly described in the co-pending shuttles and the mechanical means for transferring a filled shuttle to the change shuttle box are not herein described, since they too may be of any general and well known construction.

A rocking member 23 is mounted on the lay '2 for rocking movement, and'as shown,

is constituted as a rock shaft mounted in bearings 24secured to the lay 2'. Extending from the rocking member 23 is an arm25 which is connected, in the present instance, to the back box plate 7 by means of a link 26, with the result that the rocking member or shaft 23 will be turned or given its rocking movement by movement of the back box plate from and to its normal weaving position. I

Associated with the rocking member or shaft 23 is the finger 27 having a lateral projection 28 which will be operatively .positioned with respect to the lug 2-9 adjus'tably secured to the stop rod 30 should the box plate fail to return to normal weaving position after a shuttle change, the construction being such that when the box plate fails to return to'normal weaving position after a shuttle change the lug 28 will cause the stop rod to move rearwardly as the lay goes back and effect loom stoppage.

The stop rod 30 is mounted for movement longitudinally in appropriate bearings 31 and at its forward end is connected at 32 to a shipper 33 which is itself pivotally moun ed on the loom frame 34, with the result that when the stop rod 30 is moved rearwardly, as above indicated, the shipper will be moved to loom stopping position; The shipper 33 is" shown as connectedrto a brake rod 30 to apply thebralre, but assuch means are now well understood in the art their detail illustration and description are not deemed necessary. a

From the construction so far'described'it will be apparent that when the loom indicating mechanism (not shown) detects sub; stantial exhaustion of filling in the running shuttle, or a fault in the filling, the arm 18 will engage the tail 1'? as the lay moves frontwardly and lift the back box plate, thereby freeing the front box plate for movement by the incoming shuttle and will also act to turn the rocking member or shaft 23 to'operatively position the lug 28 on the arm 27 to effect loom stoppage as the lay goes back should the box plate fail to return to normal weaving position. After a change of shuttles, however, should the back boxpl'ate return to its normal weaving position the connection normal of the back box plate with the arm 25 will cause the rocking member or roclr shaft to be returned to its idle position, as indicated in Fig. l, and the loom will continue to run.

From the construction described it will be apparent that the present invention provides a simple and effective means for stopping the loom should a box plate fail to return to weaving position W after shuttle change.

What is claimed is 1. In ashuttle changing loom, the combination of the lay, a shuttle box having a box plate which is moved from normal weaving position for orange of shuttles,'a stop member mounted on the lay, linkage connections between the box plate and stop member controlled in its position by the box plate, and meansactuated by the stop member to effect loom stoppage when the box plate fails to return to normal weaving position after a change of shuttles. v

2. In a shuttle changing loom, the combination of the lay, a shuttle box havinga box plate movable from normal weaving position for change of shuttles, a stop member mounted on the lay for rocking movement relative thereto, linkage connections between the box plate and stop member for rocking the latter by movement of the box plate from and to normal weaving position, and means actuatedthrough the rocking member to stop the loom upon failure of the box plate to return to normal weaving position after a change of-shuttles.

3. In a shuttle changing loom, the combination of the lay, a shuttle box having box plates movable from normal weaving position for change of shuttles, a stop member constituted as a rock shaft mounted on the lay for rocking movement, connections between the rock shaft and one of the box plates for controlling the turning movement of the rock shaft, and means positioned through the rock shaft for stopping the loom on failure of the connected box plate to return to normal weaving position after a change of shuttles.

lli)

i. In a shuttle changing loom, the combi---- nation of the lay, a shuttle box having box plates movable from normal weaving position for change of shuttles, a stop member constituted as a rocker mounted on the lay for rocking movement, connections between i the rocker and one of the box plates for turning the rocker by movement of the connected box plate to and from normal weaving position, and a stop finger connected to the rocker to effect loom stoppage on failure of the connected box plate to return to normal weaving position after achange of shuttles.

5. In a shuttle changing loom,the combination of the lay, a shuttle box having box .plates movable from normal. weaving-position for change of shuttles, a stop member constituted as a rocker mounted on the lay for rocking movement, a link connecting the rocker with one of the box plates for turning the rocker by movement of the connected box plate from and to normal Weaving position, and means connected to the rocker for effecting loom stoppage upon failure of the connected box plate to return to normal weaving position after a change of shuttles.

6. In a shuttle changing loom, the combination of the lay, a shuttle box having a box plate movable from normal weaving position for change of shuttles, a rock shaft mounted on the lay for rocking movement, an arm extending from the rock shaft and connected to the box plate for turning the shaft by movement of the box plate from and to normal weaving position, and means positioned by the rock shaft for stopping the loom as the lay moves back when the box plate fails to return to normal Weaving position after a change of shuttles.

7 In a shuttle changing loom, the combination of the lay, a shuttle box having a box plate movable from normal weaving position for change of shuttles, a rock shaft mounted on the lay for rockin movement, an arm extending from the roc shaft and connected to the box plate for turning the shaft by move ment of the box plate from and to normal weaving position, a stop finger connected to the rock shaft and positioned to effect loom stoppage on backward movement of the lay upon failure of the box plate to return to normal weaving position after a change of shuttles.

8. In a shuttle changing loom, the combination of the lay, a shuttle box having box plates movable from normal Weaving position for change of shuttles, a rock shaft mounted on the lay for rocking movement, connections between the rock shaft and one of the box plates for turning the rock shaft by movement of the connected box plate from and to normal weaving position, a stop rod, and means operatively positioned by the rock shaft for effecting loom stopping movement to the stop rod as the lay goes back when the connected box plate fails to return to normal weaving position after a change of shuttles.

In testimony whereof, I have signed my name to this specification.

VERNER LIN DSJ O. 

